How can i do this, sample i have to add but i don’t get the right answer, show example

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Which rule describes the composition of transformations that maps △abc to △a”b”c